glaciall / jtt1078-video-server Goto Github PK
View Code? Open in Web Editor NEW基于JT/T 1078标准实现的视频转播服务器
License: Other
基于JT/T 1078标准实现的视频转播服务器
License: Other
readme中的qq群搜不到了,是人满了,还是解散了?还有其它能查看相关项目的地方吗
2019-05-16 09:55:52,414 INFO nioEventLoopGroup-3-2 [cn.org.hentai.jtt1078.server.Jtt1078Handler2] - start streaming to rtmp://10.20.129.54:1935/live/stream/018600000004_1 2019-05-16 09:56:02,409 INFO nioEventLoopGroup-3-3 [cn.org.hentai.jtt1078.server.Jtt1078Handler2] - start streaming to rtmp://10.20.129.54:1935/live/stream/018600000004_2 2019-05-16 09:56:14,484 INFO nioEventLoopGroup-3-4 [cn.org.hentai.jtt1078.server.Jtt1078Handler2] - start streaming to rtmp://10.20.129.54:1935/live/stream/018600000004_3 2019-05-16 09:56:23,488 INFO nioEventLoopGroup-3-5 [cn.org.hentai.jtt1078.server.Jtt1078Handler2] - start streaming to rtmp://10.20.129.54:1935/live/stream/018600000004_4 2019-05-16 10:02:55,193 WARN nioEventLoopGroup-3-2 [io.netty.channel.DefaultChannelPipeline] - An exceptionCaught() event was fired, and it reached at the tail of the pipeline. It usually means the last handler in the pipeline did not handle the exception. java.nio.channels.AsynchronousCloseException at java.nio.channels.spi.AbstractInterruptibleChannel.end(AbstractInterruptibleChannel.java:205) at sun.nio.ch.FileChannelImpl.write(FileChannelImpl.java:216) at cn.org.hentai.jtt1078.video.PublisherManager$Publisher.publish(PublisherManager.java:188) at cn.org.hentai.jtt1078.video.PublisherManager.publish(PublisherManager.java:94) at cn.org.hentai.jtt1078.server.Jtt1078Handler2.channelRead0(Jtt1078Handler2.java:77) at cn.org.hentai.jtt1078.server.Jtt1078Handler2.channelRead0(Jtt1078Handler2.java:29) at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:310) at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:297) at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:413) at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:265) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1414) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:945) at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:146) at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:645) at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:580) at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:497) at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:459) at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:886) at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) at java.lang.Thread.run(Thread.java:748) 2019-05-16 10:02:55,212 WARN nioEventLoopGroup-3-2 [io.netty.channel.DefaultChannelPipeline] - An exceptionCaught() event was fired, and it reached at the tail of the pipeline. It usually means the last handler in the pipeline did not handle the exception. java.lang.RuntimeException: no such publisher: 1 at cn.org.hentai.jtt1078.video.PublisherManager.publish(PublisherManager.java:80) at cn.org.hentai.jtt1078.server.Jtt1078Handler2.channelRead0(Jtt1078Handler2.java:77) at cn.org.hentai.jtt1078.server.Jtt1078Handler2.channelRead0(Jtt1078Handler2.java:29) at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:310) at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:297) at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:413) at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:265) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1414) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:945) at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:146) at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:645) at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:580) at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:497) at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:459) at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:886) at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) at java.lang.Thread.run(Thread.java:748)
长时间推流之后,fileChannel.write(byteBuffer) 推流就异常了
如题。
我是这样转码的-c copy -codec:v mpeg1video -s 600x400 -r 20 -f mpegts
你这有帧率,码率和分辨率的要求没?播放的时候就像快进一样
你好,最近我使用裝置送上來的音頻,編碼是G711,但經過toPCM轉換之後,聲音會變成怪怪的,有把來源data直接存成檔案是清楚的,稍微改動了一下,G711 toPCM裡面的程式碼,但還是沒法讓聲音清楚,所以想跟您請教一下,如果需要我也能將dump下來的音頻檔案寄給您。
请教下大佬,采用fifo这分分支,通过ffmpeg子进程合并音视频流时,如下:
process = Runtime.getRuntime().exec(
String.format("%s -report -re -r 25 -f h264 -i %s -f h264 -f s16le -ar 8000 -ac 1 -i %s -vcodec copy -acodec aac -strict -2 "
+ " -map 0:v:0 -map 1:a:0 -probesize 512 -analyzeduration 100 -f flv %s",
Configs.get("ffmpeg.path"),
videoFifoPath,
audioFifoPath,
"/mnt/d/temp/muxTest.flv"
)
);
第一个输入管道文件 videoFifoPath可以调用FileOutputStream打开,第二则会卡死,导致音频数据无法写。我 又通过其它测试,发现用ffmpeg 接受多个管理文件输入时,只有第一个打得开
比如上 面就有如下现象:
FileOutputStream videoFos = new FileOutputStream(videoFifoPath); //可以正常执行
FileOutputStream audioFos = new FileOutputStream(audioFifoPath); //卡死在这(调试跟踪是内部方法 native open0()时卡住
这就导致音频数据无法写入,大家有这种现象吗?
java.nio.channels.AsynchronousCloseException at java.nio.channels.spi.AbstractInterruptibleChannel.end(AbstractInterruptibleChannel.java:205) at sun.nio.ch.FileChannelImpl.write(FileChannelImpl.java:216)
PublisherManager中的publish方法中的fileChannel.write(byteBuffer)方法会在推流一段时间后抛出异常,是推流的速度太慢,跟不上接收速度的原因嘛
g726 解码有爆音, 对比解码 pcm 文件与 ffmpeg 转码的结果不同
实测发现 g726 state 有错误
其中
jtt1078-video-server/src/main/java/cn/org/hentai/jtt1078/codec/g726/G726.java
Lines 242 to 246 in 6ec4b5e
应为
if (dqsez != 0) {
if (pks1 == 0)
state.a[0] += 192;
else
state.a[0] -= 192;
}
G726_40方式 播放只有杂音,求解 音频格式确实为G726_40
一般终端都是 g711 g722 等音频编码 能否转码
我的nginx版本信息如下
nginx version: nginx/1.9.12
built by gcc 4.8.5 20150623 (Red Hat 4.8.5-36) (GCC)
built with OpenSSL 1.0.2k-fips 26 Jan 2017
TLS SNI support enabled
configure arguments: --add-dynamic-module=/usr/local/nginx_http_flv/nginx-http-flv-module
为何include nginx_rtmp.conf后会出现这个报错提示
unknown directive "rtmp" in /usr/local/nginx/conf/nginx_rtmp.conf:4
谢谢。
java.lang.RuntimeException: java.io.IOException: Cannot run program "/monchickey/mkfifo": error=13, 权限不够
at cn.org.hentai.jtt1078.video.PublisherManager.mkfifo(PublisherManager.java:230)
at cn.org.hentai.jtt1078.video.PublisherManager.access$100(PublisherManager.java:20)
at cn.org.hentai.jtt1078.video.PublisherManager$Publisher.open(PublisherManager.java:143)
at cn.org.hentai.jtt1078.video.PublisherManager.request(PublisherManager.java:66)
at cn.org.hentai.jtt1078.server.Jtt1078Handler.channelRead0(Jtt1078Handler.java:47)
at cn.org.hentai.jtt1078.server.Jtt1078Handler.channelRead0(Jtt1078Handler.java:19)
at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340)
at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:310)
at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:284)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340)
at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1414)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:945)
at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:146)
at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:645)
at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:580)
at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:497)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:459)
at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:886)
at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.io.IOException: Cannot run program "/monchickey/mkfifo": error=13, 权限不够
at java.lang.ProcessBuilder.start(ProcessBuilder.java:1048)
at java.lang.Runtime.exec(Runtime.java:620)
at java.lang.Runtime.exec(Runtime.java:450)
at java.lang.Runtime.exec(Runtime.java:347)
at cn.org.hentai.jtt1078.video.PublisherManager.mkfifo(PublisherManager.java:224)
... 26 more
Caused by: java.io.IOException: error=13, 权限不够
at java.lang.UNIXProcess.forkAndExec(Native Method)
at java.lang.UNIXProcess.(UNIXProcess.java:247)
at java.lang.ProcessImpl.start(ProcessImpl.java:134)
at java.lang.ProcessBuilder.start(ProcessBuilder.java:1029)
... 30 more
在终端实时视频640x360的分辨率是没问题的
但调取历史视频是1080p分辨率的未见报错,但ffmpeg推流一直在报这种错误,试了一下,在线flv播放也无法进行
我尝试用了另外的项目,是直接把原始h264流写到fifo通道推到rtmp,可以播放视频,但没有声音,尝试用作者的这个项目又遇到这个问题
DTS 4294927314, next:19923000 st:0 invalid dropping00:00.00 bitrate=N/A speed= 0x
PTS 4294927314, next:19923000 invalid dropping st:0
DTS 4294927380, next:19989000 st:0 invalid dropping00:00.00 bitrate=N/A speed= 0x
PTS 4294927380, next:19989000 invalid dropping st:0
DTS 4294927447, next:20055000 st:0 invalid dropping
PTS 4294927447, next:20055000 invalid dropping st:0
DTS 4294927514, next:20121000 st:0 invalid dropping
PTS 4294927514, next:20121000 invalid dropping st:0
DTS 4294927580, next:20187000 st:0 invalid dropping
搜不到群😂
Subscriber类中的take方法被interrupt异常拦截时需要再标记下interrupt,否则线程无法正常结束导致越来越多,最终结果就可能内存溢出
protected byte[] take()
{
byte[] data = null;
try
{
synchronized (lock)
{
while (messages.isEmpty())
{
lock.wait(100);
if (this.isInterrupted()) return null;
}
data = messages.removeFirst();
}
return data;
}
catch(Exception ex)
{
this.interrupt(); //需加入
return null;
}
}
是否需要实现public abstract byte[] fromPCM(byte[] data);
才能实现1078的广播、对讲音频数据下发?
大佬能否抽时间实现fromPCM这个方法,谢谢!
作者你好,感谢提供源码,测试后发现G711A转PCM后,播放有很大的杂音,一直滴滴响,ADPCM没有这个问题
請問一定有要httpserver才能進行rtmp server的傳送嗎?
我看ffmpeg的命令是抓推送到httpserver的URL
有可能可以直接收到串流就傳送到 rtmp server?
io.netty.handler.codec.DecoderException: java.lang.RuntimeException: exceed the max buffer size, max length: 4096, data length: 512
at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:459)
at io.netty.handler.codec.ByteToMessageDecoder.channelInputClosed(ByteToMessageDecoder.java:392)
at io.netty.handler.codec.ByteToMessageDecoder.channelInputClosed(ByteToMessageDecoder.java:359)
at io.netty.handler.codec.ByteToMessageDecoder.channelInactive(ByteToMessageDecoder.java:342)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:245)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:231)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:224)
at io.netty.channel.DefaultChannelPipeline$HeadContext.channelInactive(DefaultChannelPipeline.java:1409)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:245)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:231)
at io.netty.channel.DefaultChannelPipeline.fireChannelInactive(DefaultChannelPipeline.java:927)
at io.netty.channel.AbstractChannel$AbstractUnsafe$8.run(AbstractChannel.java:822)
at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:163)
at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:404)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:463)
at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:886)
at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.RuntimeException: exceed the max buffer size, max length: 4096, data length: 512
at cn.org.hentai.jtt1078.util.ByteHolder.write(ByteHolder.java:32)
at cn.org.hentai.jtt1078.util.ByteHolder.write(ByteHolder.java:26)
at cn.org.hentai.jtt1078.server.Jtt1078Decoder.write(Jtt1078Decoder.java:16)
at cn.org.hentai.jtt1078.server.Jtt1078Decoder.write(Jtt1078Decoder.java:23)
at cn.org.hentai.jtt1078.server.Jtt1078MessageDecoder.decode(Jtt1078MessageDecoder.java:31)
at io.netty.handler.codec.ByteToMessageDecoder.decodeRemovalReentryProtection(ByteToMessageDecoder.java:489)
at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:428)
... 17 more
目前单个摄像头单通道可以稳定直播,cpu占用也还行,
目前我的服务器是16核的,同时15个通道一起推流,用top看 cpu占用到了90%,然后各种卡顿了,请问有什么解决方案吗?是需要FFmpeg调用gpu去推流还是什么?
终端推流一段时间之后,推流的地方会出现broken pipe的异常
可以给点提示么,看了源码,能看懂,但是不知道怎么转,对视频这块不是很熟悉.有大佬能给点建议么
java.io.IOException: Broken pipe
at sun.nio.ch.FileDispatcherImpl.write0(Native Method)
at sun.nio.ch.FileDispatcherImpl.write(FileDispatcherImpl.java:60)
at sun.nio.ch.IOUtil.writeFromNativeBuffer(IOUtil.java:93)
at sun.nio.ch.IOUtil.write(IOUtil.java:65)
at sun.nio.ch.FileChannelImpl.write(FileChannelImpl.java:211)
at cn.org.hentai.jtt1078.video.PublisherManager$Publisher.publish(PublisherManager.java:194)
at cn.org.hentai.jtt1078.video.PublisherManager.publish(PublisherManager.java:82)
at cn.org.hentai.jtt1078.server.Jtt1078Handler.channelRead0(Jtt1078Handler.java:60)
at cn.org.hentai.jtt1078.server.Jtt1078Handler.channelRead0(Jtt1078Handler.java:19)
at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340)
at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:310)
at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:284)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340)
at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1414)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:945)
at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:146)
at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:645)
at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:580)
at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:497)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:459)
at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:886)
at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
at java.lang.Thread.run(Thread.java:748)
ideo: h264 (Main), yuv420p, 352x288, 25 fps, 25 tbr, 1200k tbn, 50 tbc
[tcp @ 0x24f38c0] Connection to tcp://localhost:1935 failed (Connection refused), trying next address
rtmp://localhost/ccav/013800138000-1: Input/output error
[hentai] 2019-06-25 15:14:10,684 [DEBUG] [video-server] - PublisherManager - publisher-1 timeout and close automatically
A declarative, efficient, and flexible JavaScript library for building user interfaces.
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
An Open Source Machine Learning Framework for Everyone
The Web framework for perfectionists with deadlines.
A PHP framework for web artisans
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
Some thing interesting about web. New door for the world.
A server is a program made to process requests and deliver data to clients.
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
Some thing interesting about visualization, use data art
Some thing interesting about game, make everyone happy.
We are working to build community through open source technology. NB: members must have two-factor auth.
Open source projects and samples from Microsoft.
Google ❤️ Open Source for everyone.
Alibaba Open Source for everyone
Data-Driven Documents codes.
China tencent open source team.